Ca + 2H2O ==> Ca(OH)2 + H2
mols Ca(OH)2 = grams/molar mass = ?
Using the coefficients in the balanced equation, convert mols Ca(OH)2 to mols H2.
Then use PV = nRT OR 1 mol at STP is 22.4L to convert to volume.
For grams Ca, g = mols x molar mass.
A certain amount of calcium reacts with water and the formed hydroxide 49g completely neutralized phosphoric acid. Calculate the volume of hydrogen obtained,
at STP, and the mass of calcium.
2 answers
thank you so much DrBob222 ^^
3 answers